Price-to-Book Ratio (P/B)

Q: How is the P/B ratio calculated?

The P/B ratio is calculated as `Stock Price / Book Value Per Share` or equivalently `Market Capitalization / Total Shareholders' Equity`. If a stock trades at $40 and its book value per share is $25, the P/B ratio is 1.6x. A P/B of 1.0 means the stock is priced exactly at its book value. Below 1.0, the stock trades at a discount to book value (potentially undervalued). Above 1.0, the market is paying a premium over book value, reflecting expected future earnings power, intangible assets, or growth potential not captured on the balance sheet.

Q: What is a good P/B ratio?

A "good" P/B ratio depends heavily on industry. For banks, 1.0-1.5x tangible book value is typical for healthy institutions. Top-performing banks trade at 1.5-2.5x. Distressed banks trade below 1.0x. For industrial companies, 2-4x is common. For technology companies, P/B can be 5-20x+ because book value does not capture their primary assets (IP, network effects). As a general value screen, Benjamin Graham suggested buying stocks with P/B below 1.5, but this metric has become less useful across the broad market as the economy has shifted toward asset-light businesses.

Q: Why is P/B important for bank stocks?

P/B (specifically price-to-tangible-book) is the dominant valuation metric for banks because bank assets (primarily loans) are regularly marked to fair value or carried at amortized cost that closely approximates fair value. This makes book value a meaningful representation of a bank's net asset value. A bank trading at 0.8x tangible book value suggests the market believes the loan book has unrealized losses or the bank will earn below its cost of equity. Banks consistently earning ROE above their cost of equity should trade above book value. The P/B-ROE relationship is the fundamental valuation framework for financials.

P/B ratioprice to book valuemarket-to-book

The price-to-book ratio compares a stock's market price to its book value per share, commonly used to value banks and asset-heavy companies.

Current Macro RegimeSTAGFLATION→ STABLE

The macro regime is STAGFLATION STABLE — growth decelerating (GDPNow 1.3%, consumer sentiment 56.6, housing deeply contractionary) while inflation is sticky-to-rising (Cleveland Fed CPI Nowcast 5.28%, PCE Nowcast 4.58%, GSCPI elevated). The bear steepening yield curve (30Y +10bp, 10Y +7bp 1M) with r…

Analysis from Apr 18, 2026

What Is the Price-to-Book Ratio?

The price-to-book ratio (P/B) compares a company's market valuation to its accounting book value. It tells you how much the market is willing to pay per dollar of reported net assets. A P/B of 2.0 means the market values the company at twice its accounting net worth, reflecting expected future earnings, growth, and intangible assets.

P/B is most relevant for industries where balance sheet assets closely approximate economic value: banking, insurance, real estate, and capital-intensive industrials.

Why P/B Matters

P/B reveals the relationship between market expectations and tangible assets:

Valuation screen: Stocks with low P/B ratios are classic value candidates. Graham and Dodd-style value investing emphasizes buying below book value (P/B < 1.0) as a margin of safety
Banking analysis: P/B is the primary valuation tool for financial institutions. The P/B-ROE relationship is the most important analytical framework: banks that generate ROE above their cost of equity deserve P/B premiums, while those earning below cost of equity deserve discounts
Cyclical analysis: P/B tends to be more stable than P/E during earnings cycles because book value changes more slowly than earnings. This makes P/B useful for valuing cyclical companies where earnings are temporarily depressed or elevated
Market-wide indicator: The aggregate market P/B ratio provides a long-term valuation signal. The S&P 500 P/B has ranged from 1.5x in deep recessions to 5.0x+ during bubble peaks

P/B Limitations and Alternatives

Standard P/B has notable limitations. For improved analysis, consider these adjustments:

Tangible P/B: Excludes goodwill and intangible assets. More conservative and more useful for banks and industrial companies
Adjusted book value: Adjusts for off-balance-sheet items, pension liabilities, and asset revaluations
Price-to-NAV: For REITs and closed-end funds, net asset value (NAV) is a more precise version of book value that uses market values for all assets

Compare P/B to ROE for a complete picture. A stock with high P/B and high ROE may be fairly valued (paying a premium for superior returns). A stock with high P/B and low ROE is likely overvalued. A stock with low P/B and improving ROE may be the best opportunity.

Frequently Asked Questions

▶How is the P/B ratio calculated?

The P/B ratio is calculated as `Stock Price / Book Value Per Share` or equivalently `Market Capitalization / Total Shareholders' Equity`. If a stock trades at $40 and its book value per share is $25, the P/B ratio is 1.6x. A P/B of 1.0 means the stock is priced exactly at its book value. Below 1.0, the stock trades at a discount to book value (potentially undervalued). Above 1.0, the market is paying a premium over book value, reflecting expected future earnings power, intangible assets, or growth potential not captured on the balance sheet.

▶What is a good P/B ratio?

A "good" P/B ratio depends heavily on industry. For banks, 1.0-1.5x tangible book value is typical for healthy institutions. Top-performing banks trade at 1.5-2.5x. Distressed banks trade below 1.0x. For industrial companies, 2-4x is common. For technology companies, P/B can be 5-20x+ because book value does not capture their primary assets (IP, network effects). As a general value screen, Benjamin Graham suggested buying stocks with P/B below 1.5, but this metric has become less useful across the broad market as the economy has shifted toward asset-light businesses.

▶Why is P/B important for bank stocks?

P/B (specifically price-to-tangible-book) is the dominant valuation metric for banks because bank assets (primarily loans) are regularly marked to fair value or carried at amortized cost that closely approximates fair value. This makes book value a meaningful representation of a bank's net asset value. A bank trading at 0.8x tangible book value suggests the market believes the loan book has unrealized losses or the bank will earn below its cost of equity. Banks consistently earning ROE above their cost of equity should trade above book value. The P/B-ROE relationship is the fundamental valuation framework for financials.

Price-to-Book Ratio (P/B) is one of the signals monitored daily in the AI-driven macro analysis on Convex Trading. The platform synthesises data across monetary policy, credit, sentiment, and on-chain metrics to generate actionable trade recommendations. Create a free account to build your own signal layer and see how Price-to-Book Ratio (P/B) is influencing current positions.

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